1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
// Copyright 2018 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"crypto/md5"
crand "crypto/rand"
"fmt"
"io"
"math/rand"
"time"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics"
"github.com/pborman/uuid"
cli "gopkg.in/urfave/cli.v1"
)
var seed = time.Now().UTC().UnixNano()
func init() {
rand.Seed(seed)
}
type uploadResult struct {
hash string
digest []byte
}
func slidingWindow(c *cli.Context) error {
defer func(now time.Time) {
totalTime := time.Since(now)
log.Info("total time", "time", totalTime)
metrics.GetOrRegisterCounter("sliding-window.total-time", nil).Inc(int64(totalTime))
}(time.Now())
generateEndpoints(scheme, cluster, appName, from, to)
hashes := []uploadResult{} //swarm hashes of the uploads
nodes := to - from
const iterationTimeout = 30 * time.Second
log.Info("sliding window test started", "nodes", nodes, "filesize(kb)", filesize, "timeout", timeout)
uploadedBytes := 0
networkDepth := 0
errored := false
outer:
for {
log.Info("uploading to "+endpoints[0]+" and syncing", "seed", seed)
h := md5.New()
r := io.TeeReader(io.LimitReader(crand.Reader, int64(filesize*1000)), h)
t1 := time.Now()
hash, err := upload(r, filesize*1000, endpoints[0])
if err != nil {
log.Error(err.Error())
return err
}
metrics.GetOrRegisterResettingTimer("sliding-window.upload-time", nil).UpdateSince(t1)
fhash := h.Sum(nil)
log.Info("uploaded successfully", "hash", hash, "digest", fmt.Sprintf("%x", fhash), "sleeping", syncDelay)
hashes = append(hashes, uploadResult{hash: hash, digest: fhash})
time.Sleep(time.Duration(syncDelay) * time.Second)
uploadedBytes += filesize * 1000
for i, v := range hashes {
timeout := time.After(time.Duration(timeout) * time.Second)
errored = false
inner:
for {
select {
case <-timeout:
errored = true
log.Error("error retrieving hash. timeout", "hash idx", i, "err", err)
metrics.GetOrRegisterCounter("sliding-window.single.error", nil).Inc(1)
break inner
default:
randIndex := 1 + rand.Intn(len(endpoints)-1)
ruid := uuid.New()[:8]
start := time.Now()
err := fetch(v.hash, endpoints[randIndex], v.digest, ruid)
if err != nil {
continue inner
}
metrics.GetOrRegisterResettingTimer("sliding-window.single.fetch-time", nil).UpdateSince(start)
break inner
}
}
if errored {
break outer
}
networkDepth = i
metrics.GetOrRegisterGauge("sliding-window.network-depth", nil).Update(int64(networkDepth))
}
}
log.Info("sliding window test finished", "errored?", errored, "networkDepth", networkDepth, "networkDepth(kb)", networkDepth*filesize)
log.Info("stats", "uploadedFiles", len(hashes), "uploadedKb", uploadedBytes/1000, "filesizeKb", filesize)
return nil
}
|
